EN 10269 Grade 21CrMoV5-7 quenched and tempered (+QT)

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Description

High-temperature steel for screws and nuts. Max. application temperature: 540 °C Further application for mounting elements at increased temperatures.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 - 7.85 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

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20.0 °C

211 - 212 GPa

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100.0 °C

204 - 207 GPa

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200.0 °C

196 - 199 GPa

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300.0 °C

186 - 192 GPa

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400.0 °C

177 - 184 GPa

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500.0 °C

164 - 175 GPa

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600.0 °C

127 - 164 GPa

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Elongation

20.0 °C

16 %

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Chromium Molybdenum Steel

Reduction of area

20.0 °C

60 %

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Tensile strength

20.0 °C

700 - 850 MPa

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300.0 °C

590 MPa

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350.0 °C

560 MPa

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Yield strength Rp0.2

20.0 °C

550 MPa

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50.0 °C

542 MPa

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100.0 °C

530 MPa

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150.0 °C

515 MPa

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200.0 °C

500 MPa

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250.0 °C

480 MPa

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300.0 °C

460 MPa

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350.0 °C

435 MPa

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400.0 °C

410 MPa

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450.0 °C

380 MPa

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500.0 °C

350 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

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20.0 °C

1.15E-5 1/K

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100.0 °C

1.11E-5 - 1.21E-5 1/K

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200.0 °C

1.21E-5 - 1.27E-5 1/K

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300.0 °C

1.29E-5 - 1.32E-5 1/K

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400.0 °C

1.35E-5 - 1.36E-5 1/K

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500.0 °C

1.39E-5 - 1.4E-5 1/K

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600.0 °C

1.41E-5 - 1.44E-5 1/K

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Max service temperature, long

0 - 540 °C

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Melting point

1382 - 1529 °C

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Typical for Chromium Molybdenum Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

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20.0 °C

460 - 461 J/(kg·K)

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100.0 °C

479 J/(kg·K)

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200.0 °C

499 J/(kg·K)

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300.0 °C

517 J/(kg·K)

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400.0 °C

536 J/(kg·K)

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500.0 °C

558 J/(kg·K)

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600.0 °C

587 J/(kg·K)

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Thermal conductivity

20.0 °C

33 - 34.6 W/(m·K)

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100.0 °C

36.9 W/(m·K)

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200.0 °C

37.3 W/(m·K)

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300.0 °C

36.9 W/(m·K)

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400.0 °C

35.8 W/(m·K)

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500.0 °C

34.4 W/(m·K)

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600.0 °C

32.9 W/(m·K)

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Thermal diffusivity

20.0 °C

9.6 mm²/s

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100.0 °C

9.5 mm²/s

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200.0 °C

9 mm²/s

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300.0 °C

8.4 mm²/s

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400.0 °C

7.6 mm²/s

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500.0 °C

6.6 mm²/s

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600.0 °C

5.5 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

3.01E-7 Ω·m

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100.0 °C

3.47E-7 Ω·m

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200.0 °C

4.23E-7 Ω·m

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300.0 °C

5.09E-7 Ω·m

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400.0 °C

6.08E-7 Ω·m

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500.0 °C

7.19E-7 Ω·m

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600.0 °C

8.43E-7 Ω·m

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Chemical properties

PropertyValue

Aluminium

0.03 %

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Carbon

0.17 - 0.25 %

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Chromium

1.2 - 1.5 %

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Manganese

0.4 - 0.8 %

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Molybdenum

0.55 - 0.8 %

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Nickel

0.6 %

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Phosphorus

0.03 %

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Silicon

0.4 %

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Sulfur

0.03 %

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Vanadium

0.2 - 0.35 %

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